47447473 has 4 divisors (see below), whose sum is σ = 47476468. Its totient is φ = 47418480.

The previous prime is 47447467. The next prime is 47447483. The reversal of 47447473 is 37474474.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7795264 + 39652209 = 2792^2 + 6297^2 .

It is a cyclic number.

It is not a de Polignac number, because 47447473 - 2⁹ = 47446961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47447423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11886 + ... + 15367.

It is an arithmetic number, because the mean of its divisors is an integer number (11869117).

Almost surely, 2^47447473 is an apocalyptic number.

It is an amenable number.

47447473 is a deficient number, since it is larger than the sum of its proper divisors (28995).

47447473 is a wasteful number, since it uses less digits than its factorization.

47447473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28994.

The product of its digits is 263424, while the sum is 40.

The square root of 47447473 is about 6888.2126128626. The cubic root of 47447473 is about 362.0242777487.

The spelling of 47447473 in words is "forty-seven million, four hundred forty-seven thousand, four hundred seventy-three".